Gas Block Advise

[flyby71]

Hi fellas! I am getting parts together for a new AR build and have come to a roadblock that I can’t get past. I’ve read about adjustable gas blocks, but haven’t found anything that really helps my exact situation. I am going for accuracy/precision with this build.

I have a 20” Criterion HBAR .223 Wylde barrel, and will be running a rifle Length gas system with a Toolcraft DLC BCG. I currently have a Daniel Defense Clamp On has block. I will occasionally shoot suppressed.

Is it a smart move to get an Odin Works or SLR adjustable gas block? Or am I just inviting potential issues? It seems like the biggest advantage would be for shooting suppressed.

 

[Sieg]

Compass Lake is making a .223 22" Kreiger varmint barrel for me and I went with the .936 Superlative Adjustable per their recommendation. I'll be using a Yankee Hill .30cal Resonator on the rifle.

 

[LeadZeke]

Superlative Arms.

 

[flyby71]

I looked hard at that one. I guess my hold up with it was it spitting carbon and junk into the handguard and all over the barrel. I’ll be using a 15” Geissele MK4, so I guess it wouldn’t be that hard to keep it clean.


Why do y’all prefer the Superlative over the SLR?

 

[_Windrider_]

The JP gas block is top notch. Best part is it’s a clamshell and can be removed without taking the front sight or muzzle device off. Very low profile as well. Also does not require pinning so you don’t have to deform the barrel.

Also with a rifle length gas system and a 15” hand guard your gas block will be exposed. I have a seekins adjustable block I would part with if you are interested in this setup. No pressure, it’s just collecting dust in my shop.

Select Adjustable Gas Block

https://www.seekinsprecision.com/product/upper-accessories/select-adjustable-gas-block-876.html

www.seekinsprecision.com

I’m pretty sure it’s .875 but I’d have to double check.

 

[TonyTheTiger]

Also with a rifle length gas system and a 15” hand guard your gas block will be exposed. .

Not quite. Rifle gas with 14.5" HG pic for reference.

 

[htowncoog]

Superlative Arms. Other option is play with your buffer weights if you are going be shooting suppressed. Vltor A5 comes into mind but don't know if that would work for rifle length. Other option with buffers is the JP silent buffer system. That let's you play with the weights and tune them to your liking.

 

[flyby71]

The JP gas block is top notch. Best part is it’s a clamshell and can be removed without taking the front sight or muzzle device off. Very low profile as well. Also does not require pinning so you don’t have to deform the barrel.

Also with a rifle length gas system and a 15” hand guard your gas block will be exposed. I have a seekins adjustable block I would part with if you are interested in this setup. No pressure, it’s just collecting dust in my shop.

Select Adjustable Gas Block

https://www.seekinsprecision.com/product/upper-accessories/select-adjustable-gas-block-876.html

www.seekinsprecision.com

I’m pretty sure it’s .875 but I’d have to double check.

Thank you for the offer, but my barrel is .750.

 

[flyby71]

I will be running the Magpul PRS stock. I might look into the JP Silent Buffer System. I don’t know anything about it, and have always used standard springs and buffers.

I was very skeptical about running an adjustable gas block with my particular set up, but now I’m really leaning towards getting the Surperlative AGB.

 

[_Windrider_]

I will be running the Magpul PRS stock. I might look into the JP Silent Buffer System. I don’t know anything about it, and have always used standard springs and buffers.

I was very skeptical about running an adjustable gas block with my particular set up, but now I’m really leaning towards getting the Surperlative AGB.

No worries on the offer. Just throwing it out there.

On my most recent build. I’m using a rifle length +1 with JP adj gas block, JP full mass carrier group and JP silent capture spring. I run suppressed and unsupressed. Runs like a champ. Rifle is a 260 rem 20” barrel.

 

[flyby71]

No worries on the offer. Just throwing it out there.

On my most recent build. I’m using a rifle length +1 with JP adj gas block, JP full mass carrier group and JP silent capture spring. I run suppressed and unsupressed. Runs like a champ. Rifle is a 260 rem 20” barrel.

From your experience, with an adjustable gas block, the full mass carrier, and JP silent capture spring, what benefits could I expect to see/hear/feel with the silent capture spring?

 

[_Windrider_]

Less felt recoil and no twang. Runs really really smooth. However given that hours is a 223 (missed that when I suggested the seekins block) it won’t help much in the way of recoil but will be helpful getting it to run smoothly. You won’t need a full mass carrier either. You could probably get away with the light carrier.

 

[kenny1773]

Get an adjustable gas block, you will not regret it and it will take you 10 extra minutes to get it tuned properly

I have used:
Odin
Superlative arms
JP

all work great, some say the superlative is a better design, but I really don't notice over the other two
I was curious so I tried them all, they all work.

 

[flyby71]

Less felt recoil and no twang. Runs really really smooth. However given that hours is a 223 (missed that when I suggested the seekins block) it won’t help much in the way of recoil but will be helpful getting it to run smoothly. You won’t need a full mass carrier either. You could probably get away with the light carrier.

I think you talked me into the JP silent capture spring. Ill put it on my list of parts to re-buy lol!

As far as a low mass bolt carrier (I’m assuming the JP one, or do you have any other recommendations?) I’ll have to check into them. I’ve never used anything but a full auto carrier. As long as it doesn’t make the gun more prone to not running reliably, I’m game to try it.

This build is about accuracy and precision for me. However, I don’t want to sacrifice reliability.

 

[_Windrider_]

I think you talked me into the JP silent capture spring. Ill put it on my list of parts to re-buy lol!

As far as a low mass bolt carrier (I’m assuming the JP one, or do you have any other recommendations?) I’ll have to check into them. I’ve never used anything but a full auto carrier. As long as it doesn’t make the gun more prone to not running reliably, I’m game to try it.

This build is about accuracy and precision for me. However, I don’t want to sacrifice reliability.

The JP system is very reliable. It can be tuned with weight and even further with your adjustable gas block.

JP also has a variable mass BCG but if you are using an adjustable gas block I don’t think it’s necessary.

 

[Darqusoull13]

I think you talked me into the JP silent capture spring. Ill put it on my list of parts to re-buy lol!

As far as a low mass bolt carrier (I’m assuming the JP one, or do you have any other recommendations?) I’ll have to check into them. I’ve never used anything but a full auto carrier. As long as it doesn’t make the gun more prone to not running reliably, I’m game to try it.

This build is about accuracy and precision for me. However, I don’t want to sacrifice reliability.

The Silent Captured Spring is my favorite upgrade for any AR but it's so much more of an upgrade for a suppressed rifle. Not hearing the spring really lets you appreciate the full experience of shooting suppressed. The added reliability of the SCS in a suppressed application is also a big bonus.

The standard steel low mass carrier will work great for standard accuracy and suppressed use. Heck, I've set rifles up to run ultra-low mass carriers suppressed but I wouldn't recommend going that route unless you had a specific need.

Adjustable gas is really about tuning the rifle to run reliably without being over gassed. It's a super straightforward process you can accomplish while sighting in the rifle. You get the advantage of less recoil while maintaining an accurate setup.

 

[bunsen27]

I run the Odin Works gas block on both of my 18" WOA uppers with rifle length gas system. It has a 20-click detent adjustment range. On both uppers it is 4-clicks going from the unsuppressed to suppressed setting. I'm about 750 rounds into the one and have had zero issues. I'm running a standard BCG in both with a H2 buffer in one and a JP SCS in the other. Both rilfes are very smooth shooting with no discernible difference to me.

 

[flyby71]

I’m getting ready to pull the trigger on the JP SCS setup. For shooting say 60/40 (unsuppressed/suppressed) would y’all recommend the standard weight or heavy weight?

I’ll be using an adjustable gas block and a full mass full auto carrier.

 

[_Windrider_]

Standard I think for a 223. Why move any more mass than what’s necessary

 

[flyby71]

That makes perfect sense. Thank you.

 

[Outcome]

I have an SLR adj gas block, at the time I was shooting a mixed amount between suppressed and unsuppressed. I tuned it to shoot with my reloads unsuppressed and now that I shoot around 95% suppressed I still havent adjusted my gas block. I would recommend and will be moving to a BRT insert in a standard low pro gas bock. With all that, I still dont think you will be unhappy with an adj. one.

 

[_Windrider_]

That makes perfect sense. Thank you.

If you call JP, they will answer the phone and help you pick the best setup. They are good people.

 

[flyby71]

If you call JP, they will answer the phone and help you pick the best setup. They are good people.

That’s good to know that they have good CS. I ended up ordering the standard weight kit.

 

[flyby71]

I have an SLR adj gas block, at the time I was shooting a mixed amount between suppressed and unsuppressed. I tuned it to shoot with my reloads unsuppressed and now that I shoot around 95% suppressed I still havent adjusted my gas block. I would recommend and will be moving to a BRT insert in a standard low pro gas bock. With all that, I still dont think you will be unhappy with an adj. one.

Now that’s in interesting route. I looked at that a while back (I ordered one of their micro pin gas blocks) and thought it might have been a gimmick. I’ll have to look into that.

 

[htowncoog]

That’s good to know that they have good CS. I ended up ordering the standard weight kit.

I shoot suppressed and unsuppressed and the standard weight kit works for me.